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# restartPolling(with:)

```
func restartPolling(with configuration: NFCTagReaderSessionConfiguration)
```

## Parameters

`configuration`

Reader configuration used for the polling restart.  The configuration does not persist in the current active session, i.e. `[NFCTagReaderSession restartPolling]` would use
the original configuration from session instance initialization.

## Discussion

\discussion Restart the polling sequence in this session to discover new tags using the provided configuration.  New tags discovered from polling will return in the subsequent
`[NFCTagReaderSessionDelegate tagReaderSession:didDetectTags:]` call. Tags that are returned previously by `[NFCTagReaderSessionDelegate tagReaderSession:didDetectTags:]` will become invalid,
and all references to these tags shall be removed to properly release the resources.  Calling this method on an invalidated session will have no effect; a new reader session is required to restart the reader.

---

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